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FINANCIAL INFORMATION BY BUSINESS SEGMENT (Details) - Investment Management Services [Member] - USD ($)
$ in Thousands
3 Months Ended
Sep. 30, 2020
Sep. 30, 2019
U.S. Global Investors Funds [Member]    
FINANCIAL INFORMATION BY BUSINESS SEGMENT (Details) [Line Items]    
Net operating revenues $ 955 $ 683
U.S. Global ETFs [Member]    
FINANCIAL INFORMATION BY BUSINESS SEGMENT (Details) [Line Items]    
Net operating revenues $ 2,300 $ 121